Final answer:
Dendrites that are not used may become weaker and less efficient at receiving and transmitting signals. However, the brain is highly plastic, and if the dendrites are stimulated through use or learning, they can regain their strength and efficiency.
Step-by-step explanation:
Dendrites are thin structures that receive nerve impulses from other cells and carry them to the cell body of a neuron. If dendrites are not used, they may become weaker and less efficient at receiving and transmitting signals. This concept is known as 'use it or lose it.'
For example, suppose a person stops practicing a certain skill, such as playing a musical instrument. The dendrites responsible for encoding and recalling that skill may become less active and eventually weaken over time. As a result, the person's ability to perform that skill may decline.
However, it is important to note that the brain is highly plastic, which means it can reorganize and form new connections. If the dendrites are stimulated through use or learning, they can regain their strength and become more efficient again. This ability of the brain to adapt and change is known as neuroplasticity.